Price-computing scale



BEST AVAILABLE Com ,(No Model.) 2 Asheets-S5061 1.

No. 542,970., men-md Ju1y16.,.1895.

mw me@ E. SWW

wervessas.

BEST AvAsLABLE com (No Model.) 2 sheets-sheet 2l.

H. E. SWIFT PRICE COMPUTING SCALE. No. 542,970. Patented July 16,1895.

:QR 1S .I BEST Avent-@ttiCGP"s l Unirse STATES PATENT OFFICE..

HORACE E. SWIFT, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO 'i E JONES-v SWIFT MANUFACTURlNG COMPANY, OF PORTLAND. MATNE.

PRlCE-COMPUTlING SCALE.

SPECIFICATION rom-ling pm of Letters Patent Na'eegoo, dated July 16, 1895.

Application led March 19, 1895.

To allwhom, it Treaty concern,.- 4

Be it known that 1, Hennen E. SWIFT, of Boston, county of Suffolk, Stateof Massaehu` setts, have linvented an Improvement in Price- 5 Computing Scales, of which the following description,in connection with the accompany'- ing drawings, isa specification, like letters and numerals on the drawings representing like parts.A I Io .This invention has for its object the production of a emputing-scale which will accurately and quickly computeand indica-te the aggregate price of an article for any and all unit. prices at every increment of move- :5 ment of' the measuring mechanism. i

In this present invention I have provided computing mechrnism operabieby movement of the measuring or Weighing mechanism of the apparatus, acontrolling member deterzo mining by its angular position the movement of the computing mechanism, while manually operated` means tix the 'angularity of the controlling member according to the unit price of the article measured.

Thenumber of units inthe article measured and the computed price are herein indicated vby rotatable pointers cooperating with two scales delineated on a suitable dial, the coinpnted-price scale being shown as graduatedv 3o in quadrants from zero to ninety'nine, representing cents, and at the zero-point of each quadrant is a. sight-opening to display a dollars-iudicatcr movable beneath it in accordance withthe computed price, "as will be de- 5 scribed, to increase the scope of the apparatus without enlarging it; inordinatelyl In accordance therewith, my invention consists in a prieelcolnputing apparatus con taiu` ing the following instrumentalities, viz: 4o Weighing mechanism, computing mechanism operated by movement thereof, a controlling member carried by the weighing mechanism and to determine by its angular position the extent of movement ot the computing mech- 45 anis-.11, and means tomanually move said member relative to its supporting mechanism, to fix vits angularitj', substantially as will be described g' also, in a scalcndicating mechanism, including a rotatable hand 0r pointer, 5o a dial having au aperture therein, a springactuated character-carrier beneath the dial out, represents a. price-coniputing apparatus the line :1:3 tra, Fig. 3,'the controlling member Serial No 542.349. (No model and haviugone or more characters thereon, a detent therefor, and a cam-plate for and against which the detent. rests, said detent and cam-plate regulating the rmovement, of 55 the character-carrier, the movement of said cam-plate by the mechau ism which rotates the Y haudonpointer permitting proportional movement of the detent and character-carrier,sub stantially'as will be described. Other features 0E myinventio'n )vill be hereinafter described, and 'particularly pointed out in the claims. Y f vFigure 1,in elevationl and partly broken.

f35 embodying. my invention. Fig.2, iu eleva tiou,represents the computing mechanism in inoperative position, the controlling member corresponding in position to zero unit price, the counter-balanced portion of the measuring mechanism being omitted and the pointeroperating devices thereof being'shown in theirextreme position. Fig. 2isasectional detail taken onfhe line :n2 m2, Fig. 2, showing. the guide d and engaging-arm d-in elevation. Fig. 3 is a detail, on a larger scale and partially broken out, of the controlling vmember and tho engaging portion of the computing mechanism. Fig. 3=L is a sectional detail on So being shown in position. Fig. 4 is an enlarged sectional detail taken on the line .2: ac, Fig. 1. Fig. 5 is a partial sectional view of the devices below the line y gf, Fig. 4; and Fig. G is a sectional view taken on the line :z:4 Fig. l, 'of a portion'of the means for fixing the position of the controlling member.

The operative mechanism is herein shown as inclosed in e. casing composed of a back a, preferably circular side walls a', and a face or dial-a2, (shown only in Figs. l and 4 and as largely broken out to show the mechanism underneath it,) the parts of the casing being connected in any suitablemannor. A 'spin` dle b, having fast thereon the pinion b', (best shown in Fig. 4,) is mounted in the baeka and in a tubular bearing b2,'rigid ly held ine., bracket bx, secured to the back in suitable manner, as by a screw 2,111@ outer end of the spindle being extended through the4 face'c rco and slabbetl ott atb to receive Athereon the hub of a total price-indicating hand or pointer B, said hand being shown only in Fig. A

i sleeve c, having a lateral flange c thereon, loosely surrounds the bearing h2 and is extended through the arm cX ot an auxiliary V5 bracket 'mounted on the bracket bx, the inner end of the sleeve resting on the outer side of the sadj latter bracket, and its outer end beingv adapted to receive thereon a split or spring hub C of a weight-indicating hand or pointer C. (Shown only in Fig. 4.) The sleeve c has fast thereon, between its flange c and the bracket b", a pinion c2, the bearing b2 thns serving for the spindle b as an exterior bearing and for the sleeve c as au interior bearing. Referring now to Figsnl'andZ, the pinion 025s shown as in engagement 'with and to be rotated by a rack c, preferably pivoted at c4 to a carrienplate D, to be described, a spring s .acting on a flattened portion of the pivot c of the rack to'force it toward the pinion c2, l'whilea pin cprevents accidental disengagementof Athe'rack and pinion. The carrier# plate D is provided with a laterally-extended arm d, suitably shaped at its outer end (see Fig. 2") to embrace a guide d', secured to the back a, the foot of the said guide being cut away at d2 fer a purpose to lne-described. A long guide, bar or arm ds is rigidly secured to or forms part of the carrier-plate D, extended in a direction parallel -to the guide d', the said arm having, as herein shown, preferably, knife-edge portions d to bear against suitable friction-rolls d, rotatably mounted in the back, and brackets d'secured thereto, the frictin-rolls dsbeing shown as peripherally grooved to receive the knife-edges d, whereby the carrier-plate land its arms are free to be moved in a right vline toward or away from the center 0E the casing, a pin or stud dx insuring the maintenance of the knife-edges'in engagement with the friction-rolls. A buffer- -spring s', mounted on the carrier-plate, is adapted to bear against a stop di, rising from the backa and in the path ofthe plate to take up anyshock whiehmight be occasioned by a sudden release ofsaid plate, as will be understood. The stop di is slabbed ot at its .top to leave a diametrical rib (la, '(best shown Ain Fig. 2,) so that rotation of the stop in one or the otherdirection will turn said rib, to permit a slight variation in the throw of the carrier-plate and its inward movement, motion in the'opposite direction being positively stopped by the wall a of the casing.

It will be seen from an inspection of Figs. 1, 2, and 4and from the foregoing that. the rack cs-will be reciprocated by movement of the'carrierplate D, thereby rotating the pinion ci, and consequently-the hand C .iill be moved for an angular distance proportional to the throwof the rack, movement of the rack from one to the other extreme being adapted to rotate the pinion c2 once, so that' the hand or pointer will traverse the scale C on the face or-dial from zere to the highest point indicated onA such scale.

'lhe scale C', herein shown, is divided to represent pounds and ounces.

Referring new to Fig. l, a yoke e is connected by rods e to suitable yoke-springs S, which latter are attached to the casing in usual manner, the reduced end e2 of the yoke being exte'nded through a suitable opening in the sidewall of the casing diametrically opposite the pointot adjustment of the springs, and provided with a hook or other suitable device e3, whereby pressure applied to the hook will distend the springs, as is common -n usual spring scales and balances.

The counterbalancing device, comprising the yoke and springs, is shown in Fig. 1 in its normal retracted position, and the yoke is connected to the carrier-plate D in ayielding manner by means'of a stud dg, rigidlysecured to the said plate and projeclingthrugh an opening cx in the yoke, a bent spring` sgheld rigidly on the yoke at e4, bearing with its free end against the stud d, the innermost edge of the opening. eX acting upon said stud when theyoke is moved outwardly, the spring s2 taking up lost motion between thecarrierplate and the yoke, when the latter returns to its normal position, and a)so obviating any shock which might occur were theconnterbalancing device suddenly released from. pressure.

The counterbalancing device, the rack and pinion c3 c2 and their connecting parts constitute measuring mechanism whereby, by ,its movement, the number of units in the article measured is'gindicated on the dial by the' amount of angular movement of the hand C over the scale C.

The arm da of the carrier-plate has pivoted thereto on its underside a'controlling member f, (shown as an arm,) longitudinally grooved upon its under face at f', (see dotted lines in Figs. l, 2, and 3,) the pin ,fx by whichthc con- .trolling member is pivoted extending through a hub d10 on the arm da, the hub being slotted in its side to permit the movement therein of a. hooked lug f2 on the piu f", a strong spiral spring S being attached at one end to the lng and at its other end secured to the arm d3, the tendency of said spring being to throw the controlling membcrfin the dircction. of the arrow 10, Fig. 3. I

The outward movement of the controlling memberf, due to the action of the spring S', is counteracted and regulated by manuallyoperated means, adjustable according to the unit price of the article measured, to permit more or less pivotal movement of the controll thereby to tix its angular' to the direction of movement of said plate, to

Vengage the periphery of a preferably grooved friction-roll f3 mounted on the upper side of the controlling member f, the said arm forming a stop to limit the throw of said arm, due

1o to the action of the spring S.

In Fig. 1 the plate g is shown at that extreme end of its movement which will permit the greatestV angularity of the controlling memberfand in Fig. 2 the plate is shown at the other extreme end of its path, the controlling memberat such ti me being'in parallelism with thefpath otmovement of the measuring mechanism hcreinbefore described, the a'n.

gnlarity of the said member being reckoned '2o from suchpath or line of travel as a base. A

lever g, pivoted at-g7 to the casing, bears at one end againsta projection g8 (best shown in Fig. 2) on the slide plate g, the outer arm g9 of the lever exte'nding through the wall a of the A 5 casing and within a preferably circular chamber formed by the erection oia. wall a5 upon an extension a. of the back a, and covered by a dial F, (shown in Figs. 1 and 6,'and partly broken ont therein,) the'wall a being secured 3o to thecasing-wall a in any suitable manner,

or it may be a part thereof.

The movement of the lever g-G about its fulcruin isgoverned bya manually-operated device vadj ustable according to the unit price of v351 th'earticle to be measured, land consisting of a plate hhaving an evolute periphery between the points 5 and 6, secured to an extended hub h', rotatable about a post Z5, rigidly secured to the extension o5, said hub being prol o vided`at its upper end with a suitable thumb-A Anuthm, the dial-plate F being also secured to and to rotato'with said hub and the evolute plate h.' Y

The dial has suitable gradnatiens thereon from zero to any desired 'number-forty-eight being shown-to'indicate the price per pound of the article to be measured, the index-point hx, secured to the wall a, being located adjacent'to the pcripheryol. the dial 5o The arm g of the lever is upturncd at gm to bear against the evolute periphery of the plate h, which latter has a pin or projection at the point 6 to bear against the upturned part gw of the lever when the plate ,has been rotated in the direction of the arrov.' 2Q into the position shown in Fig. 2. Above'the evolute plate I have secured to the hub h a disk h2, (see Fig. 1,) notched at its periphery to correspond to the number of graduations on the dial F, 6o said notches being engaged one at a time by a spring catch or tlnger h3 to prevent accidental rotation of the evolute plate, the linger and the'ntched plate constituting a locktor the said devices. l

l' 65 It will beobvions from au inspection of Figs.

v1 and 2 that rotation of the evolute plate from fthe position shown in Fig. l to that shownin BEsrAvAiLABLE coml Fig. will swing the lever g6 from one to l another extreme ot its movement and positively move the slide-plate from the position 7o shown in Fig. l to the right into the position shown in Fig. 2, reverse rotation of the evolute plate permitting the lever 96 to swing proportionally iB the oppositedircction, the slideplate g being moved at such time from right to left by and through the action of the strong springs S', which at all times maintains the controlling member pressed against the arm g4 on theslide-plate. 1

The unit price of the article being'known, 8o the operatonwillturn thethumb-nut h2o until the proper graduation on the dial F is opposite theindex-pointhx, such movement fixing the angnlarity of the controlling member f by the intervening connections. The pinion b" on the spindle b is in mesh' with the teeth of a-rack b4, pivoter] at `b5 toaportion L5 ot the carriage, to be described, the pin or stud c5 preventing disengagement of the rack and pinion, whileaspring sa, b'earingonaattened 9o portion of the pivot b5, presses the rack against the pin-ion in a yielding manner.

The carriage is shown as a bar bl, extended laterally across the central line of 'the' casing and beneath vthe rack c3 and the bracket b", 9" said carriage being preferably provided withv knife-edges bE to engage the grooved peripheres of, the friction-rolls b", rotatable in brackets b and the back a, while the outer end of the arm be slides in an undercut guiderm. way Z212 in a plate t)la on the back, the carriage thus being supported at three points and movable with very littledfriction, a spring-controlled roll be acting upon the bar b" to keep'. the same in'engagement with the rolls nf.- lt x05 is obvious that as the carriage is moved from the position shown in Figsl and 2 to the other end of its path the rack Il* will rotate the pinion b a number of times, depending upon the number ot teeth in the rack and x 'xc pinomthe numberbeing herein shown such as to rotate the pinion 'three' times for the full movement ot the carriage from right to left.

The carriage?) has pivoted` thereon at bf (most clearly Shown in Fig. 3) a roll bX5 to en ter the groove f in the under side of the controlling memberf, the saidvgroove and theinner or pivoted end ot said member being-shown by the dotted lines in Fig. 4 in order to show more 12o clearly and distinctly Athe parts underneath, now to be described. The pivot b14 has mounted thereon between the top of the roll bl5 and the bottom of the groove f a plate bw, preferably bent over at one end, as best shown in Fig. 3., 'x25 and having rotatably mounted therein asec- 'ond roll b", also entering the groove in the controlling mer'nbenthe diameter of the rolls be ing greater than the width of the plate bm. A springsis connected at one endtoa preferably r o bentpin b on the carriage, andai itsotherend is attached toa stud bl on the plate, the normal tendency of thespring being to turn the plate on its pivot L to press the roll b against the l lower side of the groove f, the roll h15 engaging its upper side, thereby lessening the friction and increasing the freedom of movement of the parts. A shoulder bwon the bar b" is adapted to act against the stud b when the controlling member is in the .position Vhown in Fig. 2 to act as a positive stop there- It will be obvious from the. foregoing that the movement of the measuring mechanism istransmitted to the carriage by or through the controlling member, movable with one, and the rolls Z115 b", movable with the other, and the extent of movement ofthe carriage willv be controlled by the angular position of the controlling member f-that is to say, if the said controllingmember is parallelto'the pathof movement of the measuring mechanism, as shown in Fig. 2, no movement 'whatever will be transmitted to the carriage, as`the conticlling member will move p and'down past the rolls b5 b,- but if the angularity of the controlling member is changed to any position between the position shown in Figs. 2 and 1 the bodily movementof the controlling member will cause a corresponding movement'ot the carriage, the path of the carriage being at right angles to the path of the measuring mechanism, and the greater the angulai-ity of the controlling member the greater the movement of the carriage.

The carriage, together with the rack b and pinion b', constitute computing mechanism to compute the aggregate price of the article measured according to the unit price, the movementof the computing mechanism being determined by` the angular position of the controlling member, said controlling member being manually fixed as to ils angular-ity by means of the evolute plate and the intervening connections, as described.

The computed price is indicated upon the v dial-faced2 by the hand B tio-operating with the gradnations B. The greater the moveinept of the carriage the greater the sweep of said hand or pointer.

It will be noticed that the appa ratus herein shown is constructed on the right-line prin-v ciple, the carriage forming part of the computing mechanism moving at right angles to the path of movementof the measuring mechanism, and the movement of said carriage is the resultant ot" two forccs'applied respect.- ively'in the path of movement of the measuring mechanism and in the direction of the groove in the controlling member.

For convenience in indicating the price after `the hand or pointer B has made one revolution the scale B is divided into four equal parts, and each quadrant is graduated to represent one hundred cents, so that a price of four dollars will be indicated when the hand has .made one complete revolution.

It is obvious that the numbers from 1 to ,4 could be placed upon the dial, one at the highest division of each quadrant; but inasmuch as the hand can make three complete essi' AVAILABLE com revolutions it would be inconvenient; for the operator to'add mentally the number of dollars after the rst revolution. So, too, if the numbers from lto 12 were displayed on the dial in succession at the quadrantal points confusion would arise as tothe selection of 'the proper one t'o be read. 'lo obviate these objections I have made a series of apertures in the dial at the quadrantal pointshone such aperture being shown in Fig. l, and I have provided means to automatically Vdisplay at the apertures single numbers or characters in vaccordance with the movement of the hand B, the characters herein shown representing dollars.

Referrings to Figs. 'l and 4, four arms m',

m2, m3, andm are secured to a base m, ninety tions, the said characters being the numbers 1 to 11, inclusive,'an`d 0 arranged ngroups ot three, as shown in Fig. 1, the lower number in each group being at the leading end of the enlargement` The apertures 55 arelarge enough to displayone numberat a time, and it will be evident that by moving the character-carrier,`composed ofthe base m and its arms step by step a dilerent number Will be displayed at an aperture for each step of movement. 0n the enlargement 1 the numbers are O, L1,'and 8, on 2 the numbers 1, 5, and 9, and so on for the other two arms. The spindle 'n is mounted in a. sleeve-bearing n', fast in the bracket c, (see Fig. 4,) an annular collarux, secured to the spindle, resting on the top'of the-bracket, and a pawl n2, fast on on the spindle' n, is held against the cam-edge of a'plate b by means of a light bow-spring s6, connected at one end to the collar n* and fastened at its other end to the bracket c-,

the spring tending to turn the spindle and the character-carrier in the direction of the arrow 60, Fig. 5, and arrow 60", Fig. 1. l Normally the position ofthe character-car- 'rier-is shown in Fig. 1, the 0 and the numbers 1, 2, and 3 being displayed at the aperl nine cents-thatis, for one revolution of the hand B-for the part b56 of the cam-plate b is long enough'to act upon the pawl n2, while the computing mechanism' is being moved to indicate such price.

' The cam-plate is shown as secured topa part of the computing mechanism movable in a rightline, herein shown as the barb". When the price is four dollars or over, the cam- `tures 55, and such position willbe maintained i for any price up to three dollars and ninety- "i 25 V scemi/naaste com plate'b35 Vwill be moved until the lower part 37, is opposite the pawl-n'f, permitting rotative movement of nhospindle n as the pawl moves from Z136 to 2:37, and this movement is enough to advance the character-carrier one step, displaying the numbers from 4 to 7, incl usive, at the apertures for any price between fourdollars and seven dollars and ninety-nine ,cents indicated hy the second revolution of the hand E. A price of eight dollars or more willmov'e the cam-plate until the lowest portion 638 ,is opposite the pawl n2, permitting-the lastadvauce of the character-carrier and displaying the numbers 'from 8 to ll, inclusive', for the third revolution of the hand and indicatingprice up to eleven dollars and ninetyninc cents Then the bar L7 resnmesits normal position the return movemen trof the cam platebwautomatically resets the character carrier step by step, thc pawl '1:12 being moved from part if* to b3 and then to' Z135, thc shoulders between the parts being rounded or inclined to allor-v it.

The spring s acts to rotate the charactercarrier whenever allowed to do so, the paw] 'n2 acting as a' dotent, as -it were, to limit the action of the springs", while the cam-plate i235 operates asa releasing device, in this instan-c controlled by the movement of the computing mechanism.

lNhilelhavc herein shown the scale lj divided quadrautally with corresponding apertures and the characterTcarrier as movable in accordance therewith, my invention is notrestricted io such construction, for the dial may be provided with one or more apertures according.r to the division of the scale and the number of revolutions which the indicatinghaud cci-operating therewith may make, and the character-carrier will be so operated and ccntrclled as to display one or moro characters at an aperture. v

'lVhile I have herein shown the charactercarrier as applied to a scale in connection 'with the price-computing mechanism it is not rcstricted thereto,- for the principle may he u sed"withother.1nechanism-as measuring or Weighing mechanism, for instance-when it is desired to more conveniently read the indications o f the hand or pointer.

In another application, Serial No. :3l2,339, villed by me the 19th day of March, 1805, l have shown and described ,and broadly claimed a computing-scale containing weighing mechanism, computing mechanism operativelyconnected to and Aactuated thereby, a controlling member top determincmby its angular position thc extent ot' movemcntot' said computing mechanism, and manually-operated means to fix the angularity of said controlling member, and accordingly such subject- -matter is not broadly claimed herein.

I claim- I 1. ln a price computing scale, weighing mechanism; computing mechanism opera-ted in a. right line; computing mechanism operated by the movement of said carrier-plate;

a controlling member pivotally connected tu4 said plate; a connection between said weighing and computing mechanisms, movable along said member; and meansto turn said member on its pivotto adjust; its angle rela-- tive to the path of movement of the carrierplatc, to thereby tix the path of said connection, substantially as described.

3. lr. a price computing scale, weighing mechanism; a controiling member movable therewith; means to fix the angnlarity ot` said. member relative to the parhof movement of said mechanism; computing mechanism, including a carriage movable in a righ; line; anda moving connect-ion between said carl ringe and controlling' member, to move the the computing mechanism in a given ratio to tue measuring mechanism, substantially as described.

4. In a price computingscale, weighingand computing mechanisms, each includinga pinion an d a spring-controlled rcel; in mesh therewith; a controlling member connecting said l indicato the weight and price of an article,

.substantially described.

5. lu a price computing Scale, weighing and computing mechanisms; a controlling member connecting them and determining by its position the extent of movement of the coinputing mechanism; a graduated unit price dial, locking plato, and evolute shaped actuator-,connected to be simultaneously rotated; and connections intermediate said actuator and controlling member, to hxthe positie-not the latter according to the unit price of the article, substantially as described.

6. ln a price computing scale, a. carrierplato movable in a right, line; a. countcizbai-- ancing device connected thereto, and having4 an interposed spring to taire up shock; an adjustable stop to limit the inward :movement ol thccarrier-plafe, and a butter on .Said plate, sulistantiallyas described. Y u -7V." lliA a scale, indicating mechanism, including a rotatable hand or pointer; a dial havinga pluralityol" apertures therein and graduated, equally intermediate said aper` turcs; a character carrier beneath the dial and having separated series of characters thereon, one of said series being adjacent each aperture; and means controlled bythe movement by movement thereof; a controlling member` ot said indicating mechanism to automaticarried by the Weighing mechanism and. to cally display at cach apertnrea character of ICC ICS

IIC

'BEST AVALABLE COP its particular series corresponding to the ro` tative movement of the hand or pointer,v snb- -stantially as described. l

8. In a scale, indicating mechanism, in- 5 cluding a rotatable hand or pointer; a dial having an aperture therein; a spring-actuated character-carrier beneath the dialand having one or more characters thereon; a detent thereforfand a cam plate for and against rc A which the detent rests, said, detent and cam plate regulating the movement of the character-carrier, the movement of said cam plate by the indicating mechanism permitting proporticnal movement of the detent and charac- 15 ter carrier, substantially as described.

9. In a price computing scale, Weighing mechanism; computing mechanism operated by movement thereof; a controlling memberto determine by its position the extent of movement of the computingmecbanism; means to zo fix the position of said member; a dial having an aperture therein; a spring actuated character carrier having one or more charac- HORACE E. SWIFT. 1 Witnesses:

JOHN C. EDWARDS,

MARGARET A. DUNN'. 

